The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 2017
Filed:
Sep. 10, 2012
Wolfgang Ewert, Hamburg, DE;
Michael Sievers, Clausthal-Zellerfeld, DE;
Hinnerk Bormann, Vienenburg, DE;
Wolfgang Ewert, Hamburg, DE;
Michael Sievers, Clausthal-Zellerfeld, DE;
Hinnerk Bormann, Vienenburg, DE;
CNP—TECHNOLOGY WATER AND BIOSOLIDS GMBH, Hamburg, DE;
Abstract
The invention describes a method for treating sewage sludge through the treatment steps of hydrolyzing () the sewage sludge () and digesting () the hydrolyzed sewage sludge (), which has undergone hydrolysis (), for the anaerobic treatment of the sewage sludge (), and through the step of separating phosphate from the at least partially treated sewage sludge (). Phosphate is separated after the treatment step of hydrolyzing () and before the treatment step of digesting () the hydrolyzed sewage sludge (), wherein the sewage sludge (), without the phosphate portion separated in the phosphate separation step, is fed to the anaerobic treatment performed through digestion ().